waterston



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PROOF PRESS Filed June 25, 192s 4 Sheets-Sheet l` WITNESSM WW c. L. wATRsroN 4- Sheecsv--Sheefl 2 Jl a. M f 4. S

wlTNEss:

Oct, l, 1929. c. l.. wATERsTN- I. 1,730,181

PROOF PRESS 4 Sheets-Sheet `3 A Filed June 25. 1928 m um m Niv,

Oct. l, 1929- c. L wArERs-roN Pnoor PREss vFiled June 25. 1928 4 Sheets-She'et 4 "HUH H! H ll Il Il Illll IIIIIH III mvEN'roR ATTORNEY Patented Oct. l, 1929` CHARLES L. wA'TnRsToN, or NAsHvILLa,

ara? 11- TENNESSEE, ASSIGNOB OIE ONE-HALF TO PROOF Application led .Tune 25,

This invention relates to -a proof printing press, the general object of the invention bei-ng to provide means whereby proofs can be easily and quickly printed `from type forms and in a clear manner and without touching the paper until the proof is printed, with means for carrying a roll of paper on the paper carrying member, thereby eliminating loss of paper through careless handling and placing -of the paper in piles adjacent the press.

Another object of the invention is to provide automatic 'means rfor lowering the rpaper carrying member so as to place the paper on the type at vthe beginning of the printing operation and 'for lraising the member at the end of the operation so that the paper is automatically placed on the type and removed therefrom during the operation of the press.

This invention also consists in certain other features of construction and in the combination and arrangement ofthe several parts, to be Ahereinafter fully described, villustrated -in ythe accompanying drawings and specifically 'pointed out in the appended claims. i

ln describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a side view of the improved press.

'Figure 2 is a view'of the yopposite side. Figure 3 isla View of ,one end of the'press. Figure tis a view of 'the-other end.

, Figure 5 is a section lon line 5 5 of Figure l3,'showing the parts with the half cylinder in raised position.

. Figure 6 is a similar vieW,v but showingthey vhalf cylinder in 'lowered position.

-Figure7 is a section on line of Figure 5. f

Figure 8 is a sectional detail view showing one of the spring pressed 4rollers for holding the paper against the knife and on the half cylinder. n

In these views, the numeral 1 indicates a table which is previded witha fiat surface PRESS 1928. Serial No. 288,030.y

to receive the pipe A shown in dotted lines in Figure 3 and with the racksQ at the sides thereof. Upright frames 3 are fastened to the sides of the table and these frames are formed with the guideways 4l. The paper to be printed upon is carried bya semi-circular cylinder 5 which is fastenedvto a shaft 6, the ends of the shaft passing lthrough the eccentric members 7, which carry the rings 8 for engaging the guideways 4, the rings being supported on the eccentrics' by the roller bearings 9. Each eccentric is formed with a flan-ge 10 which abuts the outer'face of each frame 3 and overlaps the guideways and the outer end of each eccentric is formed witlji a friction headll which extends into al recess 12 formed in a h ub 13 fastened to each end vvof the shaft, one hub forming 'a part of the hand ywheel 14.y `A 'friction ring 15 is fastened to f'eac'h hub by the bolts 16 in such a manner that the yhead 1 1 isfrictionally held between the yhub and the ring. The ends of the half cylinder 5 are formed with the rack teeth 17 which en-. gage the rack bars 2 and a roll of lpaper B is carriedby a shaft 18 detachably connected with the rearV part of the half cylinder, asshown at y19, adjacent the "top 'thereof so that portions of the paper canbe passed over the half cylinder, the paper being held on the half cylinder by the rolls 20', the stems of which are pressedv by the springs 21 so that the rolls press the paper against a knife bar 22 at the lower end of the half ycylinder and thus hold the .paper on the half cylinder. f Each flange 10 is formed with Aa forward extension 10 which carries a small roll y23 adjacent its free end for engaging either the upper or lower bar of the guideway 4l.

f A portion of the paper is pulled from the roll'B and passed over the half cylinder and between the rolls 2O and the'knife bar22, so that a portion of the ,paper is stretched over the curved surface of the half cylinder, it

being understood that lsuitable packing is placed between the -curved surface and the paper. VThen the type form is placed on the table and inked and then 'the hand wheel is turned. The inwardmovement of the hand wheel will cause the friction means to turn the eccentric 7 on the ends of the shaft 6 so y that the shaft and the half cylinder will be lowered to place the cylinderl and the paper thereon against the form. 1When the rollers 23 on the extensions l0 of the flanges l0 of the eccentrics engage the lower bars of the guideways, further movement of the eccentrics will be prevented and then the turning movement of the hand wheel will cause the eccentrics, together with the shaft and the half cylinder to roll toward the rear ends of the guideways andthereby cause the paper on the half cylinder to Contact with type and thus the paper will'be printed. When the half cylinder reaches the end of the form, the wheel is turned in an opposite direction, the initial movement of the wheel turning the eccentrics so that the shaft and the half cylinder are moved upwardly, whereby the paper is lifted above the type and as soon as the rollers 23 strike the upper bars of the guideways 4, further upward movement of the parts is prevented and then the continued movement of the hand wheel causes the parts to pass to the front of the machine to their original positions. The free end of the paper is then uppermost and the end of the paper is seized betweenl the fingers and the paper pulled outwardly until t-he printed portion passes the knife bar 22, when the paper can be severed by pulling it against the corner of the knife bar so that the. printed portion can be severed from the rest of the paper. This action of removing the printed portion will place a new portion of the paper on the half cylinder. As will be seen, during the movement of the hand wheel, the teeth on the half cylinder will engage the rack bars 2 so that the half cylinder is prevented from slipping and thereby prevent blurring of the printing by the drag ofthe paper on the type.

The` half cylinder provides a nearly flat printing surface during the'printing operation, thereby insuring clear print and the half cylinder is automatically lowered at the beginning of the printing operation to place the paper upon the type and is automatically raised at the end of the operation to raise the paper above the type, thus not only insuringv clear print, but preventing inking of the packing. By having'the roll of proof paper on the half cylinder, a saving of paper and' time results and a better and cleaner proof isV secured as the paper is drawn tight over the cylinder and is not touched until the printing is completed. Furthermore, there is no necessity of having the paper arranged in piles adjacent the press, as the paper is carried directly on the half cylinder. K

It is thought from the foregoing description that the advantages and novel features of my invention will be. readily apparent.

It is to be understood that I may make changes in the construction and in the combination and arrangement of the several parts,

provided that such changes fall within the scope of the appended claims.

What I claim is l. A proof printing press comprising a table, guiding means at the sides of the table above the same, rack bars at the sides of the table, a shaft passing through the guiding means, rolls carried by the shaft engaging the guideways, a half cylinder carried by the shaft, means for supporting a roll of paper on the half cylinder, means for holding a portion of the paper on the curved surface of the ning of the printingl operation and raisingthe'half cylinder and its vshaft at the end of the printing operation.

Q. A proof printing press comprising a table, guiding means at the sides of the table above' the same, rack bars at the sides ofthe table, a shaft passing through the guiding means, rolls carried by the shaftengaging the guideways, a half cylinder carried by the shaft, means for supporting a roll of paper on the half cylinder, means for holding a portion of the paper on the curved surface of the half cylinder, a vhandle attached to the shaft for rotating the same to cause it to travel from one end of the guiding means to the other, a knife bar carried by the half cylinder for cutting the paper after the same has been printed and the printed portion pulledover the curved surface to a point where the knife will sever the printed portion, thus leaving a new portion of the paper on the cylinder, automatic means for lowering the half cylinder and its shaft at the beginning of the printing operation and raising the half cylinder and its shaft at the end of the printing operation, such means comprising eccentrics on the shaft and carrying the rolls which engage the guideways and frictional means for connecting the eccentrics with the shaft.,

3. A proof printing press comprising a table, guiding means at the sides of the table above the same, rack barsat the sides of t-he table, avshaft passing through. the guiding means, rolls carried by the shaft engaging the guideways, a half cylinder carried by the shaft, means for supporting a roll of paper on the half cylinder, means for holding a portion of the paper on the curved surface of the half cylinder, a handle attached to the'shaft for rotating the same to cause it to travel from one end of the guiding means to the other, a knife bar carried by the half cylinder for cutting the paper after the same has been printed and the printed portion pulled over the curved surface to a point Where the knife will sever the printed portion, thus leaving a new portion of the paper on the cylinder, automatio means for lowering the half cylinder and its shaft at the beginning 0f the printing operation and raising the half cylinder and its shaft at the end of the printing operation, such means comprising eccentrics on the shaft and carrying the rolls which engage the guideways, rictional means for connecting the eccentrics With the shaft and means for limiting the movement of the eccentrics by the guiding means.

In testimony whereof I afx my signature.

CHARLES L. WATERSTON. 

